Door-check



O. GRISELI...

DOOR CHECK. v I APPLICATION FILED AUG.1I, i9l9. 1,364,932 Patented Jan; 11,1921.

2 SHEETSSHEEI ll nucnfoz 012 a Glrisell O. GRISELL.

DOOR CHECK.

APPLICATION-FILED AUG.H, 1919.

1,364,932. I Patented Jan. 11, 1921- 2 SHEETS-SHEET 2;

022a Grz'sell I (Ilttonzu a amueutoz UNITED S s PATENT OFFICE.

ONA GRISELL, OF COURTL AND, KANSAS.

noon onncx.

To all whom it may concern:

Be it known that I, ONA GRISELL, a citizen of the United States, residing at Courtland, in the county of Republic and State of Kansas, have invented a new and useful Door-Check, of which the following is 'a specification.

The present invention relates to door checks, the principal object being to provide a device of this character which will prevent the door closing suddenly after the same has been opened, thus eliminating jarring of the door, and which will also insure the door being properly shut.

A further object of the invention is to provide a check of this character which may be associated with any .swinging door and which will allow the door to open to its fullest extent.

Another general object of the invention is to provide a door check having the above characteristics, which is simple in construction, which consists of few parts, and which may be manufactured and sold at a minimum cost.

lVith the above and other general objects and advantages in mind, the invention consists of combinations of elements, constructions and arrangements, operations and formations and general assemblage, the details of which which will be hereinafter fully set forth in the appended claim, and illustrated in the accompanying drawings, wherein Figure 1 is a fragmentary longitudinal sectional view of a swinging door having my improved door check applied thereto, part of the door frame being broken away to illustrate parts of the device;

Fig. 2 is a fragmentary front elevation of a door having my improved door check associated therewith, part of the door being broken away to illustrate parts of the door check upon the opposite side of the door;

Fig. 3 is a fragmentary top plan View of the door construction and showing the device applied thereto, the door being shown in open position;

Fig. 4 is a longitudinal sectional view taken on line 44 of the cylinder illustrated in Fig. 1;

Fig. 5 is a detail sectional view taken on line 5-5 of Fig. 3.

Referring to the drawings in detail, a swinging door is designated at 5 which is hinged to the door frame 6. The construction of the door and door frame is of any Specification of Letters Patent.

Patented Jan. 11, 1921.

' 1 Application filed August 11, 1919. Serial No. 316,689.

conventional type. Extending horizontally from the door 5 at its upper transverse edge and extending to its rear longitudinal edge is a U-shaped trackway 7 over which a wheel 8 is movable and is journaled in bearingarms 9 carried by the free end of a rod 10 formed with a pintle 11 mounted in the bearing 12 upon the door frame 6. In order to normally urge the door to closed position a coil spring 13 is provided which encircles the pintle 11 and has one end fixed to the bearing 12 and its opposite end operatively connected with the pintle. WVhen the door is swung to opened position the spring 13 is placed under tension and when the door is released the spring returns the door to closed position.

Horizontally disposed upon the top of the door frame is a cylinder 14 formed with a pintle 15 at one end thereof that is supported in the bearing 16 mounted upon the door frame. Reciprocable in the cylinder 14 is a piston rod 17 having a piston 18 in one end thereof and having its opposite end extended at right-angles and loosely disposed in an upstanding car 19 formed upon one end of a rod 20 pivotally connected with the door at 21. This rod 20 is pivotally supported upon the upturned end of a crank arm 22 journaled in bearings 23 mounted upon the outer face of the door at the upper edge thereof.

It will be seen that when the door is swung to opened position the wheel 8 will travel toward the inner edge of the door on the track 7 and the piston rod 17 will be extended from the cylinder. Upon releasing the door the rod 10 will be swung inwardly through the medium of the coil spring and due to the compression in the cylinder 14 upon the moving of the piston 17 inwardly, the door will be caused to move slowly to closed position.

The embodiment of the invention herein illustrated and described is considered the preferred construction but it will be understood that the same may be modified and altered in many respects and that such limits of modification are governed only by what is claimed.

What I claim as new and desire to protect and secure Letters Patent on, is

In a door check, a door frame; a door; a cylinder; means for pivoting the inner end of the'cylinder to the top of the frame; a piston operating in the cylinder and ineluding a rod; an arm having an upstandmeans being disposed in vertical aline ment when the door is closed; a bellcrank comprising a long part and av short part, the bell crank being fulcrumed at its angle on the depending outer end of the arm, the short arm of the bell crank being pivoted to the rod; and mechanism for pivoting the long arm of the bell crank to the door in 1 horizontally spacedvrelation to both of said means.

In testimony that I claim the foregoing 15 as my own, I have hereto afiixed my signa- \Vitnesses: S. J. LINDER, CORA G. SOULES. 

